Results 161 to 170 of about 3,486 (198)

Rapid depressurization of pressure vessels

Journal of Loss Prevention in the Process Industries, 1990
Abstract Experiments were conducted on the rapid depressurization of large pressure vessels. Measurements taken included the pressure, temperatures at a large number of positions both within the fluid phase(s) and on the wall of the vessel, and composition, all as a function of time during the blowdown process.
Afzal Haque, Stephen Richardson, Graham Saville, Geoffrey Chamberlain   +3 more
openaire   +1 more source

Radon Mitigation by Depressurization of Concrete Walls and Slabs

Health Physics, 1999
A special laboratory, the Radioisotope Unit Radon Analysis Laboratory, has been built for the study of radon mitigation in high-rise buildings. Reduction of radon exhalation rate from concrete walls as a result of depressurizing the interior of the wall was studied by embedding tunnels in a wall and pumping away the radon in the wall.
Hung, LC, Leung, JKC, Tso, MYW
openaire   +4 more sources

The Characteristic of Hydrate Exploitation by Depressurization

Volume 5: Ocean Engineering, 2013
According to the schematic and properties of a methane hydrate deposit in Shenhu Area of South China Sea in China, the characteristic of hydrate dissociation, water and gas production were simulated with a depressurization method. The effect of hydrate saturation, porosity and permeability et al. on hydrate dissociation was studied, the key controlling
Weixin Pang, Qingping Li, Xichong Yu, Fujie Sun, Gang Li   +4 more
openaire   +1 more source

Depressurization Behavior and Strategy of Automatic Depressurization System for AP1000

Volume 9: Advanced Methods of Manufacturing for Nuclear Reactors and Components; Severe Accidents and Mitigation Strategies for Beyond Design Basis Events
Abstract This article through simulate small-break loss-of-coolant accidents (SBLOCA) specifically in the AP1000 and thoroughly analyze the behavior and strategy of the ADS in such accident scenarios. A comprehensive AP1000 model is constructed using the System Analysis Code, incorporating various components including the reactor coolant
Zhengrun Shang, Dufeng Lv, Zhaoming Meng, Zhongning Sun   +3 more
openaire   +1 more source

Brent Field Depressurization Management

SPE Offshore Europe Oil and Gas Conference and Exhibition, 1999
Abstract The Brent Field commenced production in 1976, with annual oil production peaking in 1984 at 410 Mbbl/d. Since the mid 1980s, oil production has been declining, but because of the high solution GOR substantial gas reserves remain, dissolved in the residual and bypassed oil. In 1992 the decision was taken to depressurize the Brent
J.J. Gallagher, D.M. Kemshell, S.R. Taylor, R.J. Mitro   +3 more
openaire   +1 more source

The Effect of Sudden Depressurization on Pilots at Cruising Altitude

2012
The standard flight level for commercial airliners is ∼12 km (40 kft; air pressure: ∼ 200 hPa), the maximum certification altitude of modern airliners may be as high as 43-45 kft. Loss of structural integrity of an airplane may result in sudden depressurization of the cabin potentially leading to hypoxia with loss of consciousness of the pilots ...
Muehlemann, Thomas, Holper, Lisa, Wenzel, Juergen, Wittkowski, Martin, Wolf, Martin   +4 more
openaire   +3 more sources

Depressurization Amorphization of Single-Crystal Boron Carbide

Physical Review Letters, 2009
We report depressurization amorphization of single-crystal boron carbide (B4C) investigated by in situ high-pressure Raman spectroscopy. It was found that localized amorphization of B4C takes place during unloading from high pressures, and nonhydrostatic stresses play a critical role in the high-pressure phase transition.
X Q, Yan, Z, Tang, L, Zhang, J J, Guo, C Q, Jin, Y, Zhang, T, Goto, J W, McCauley, M W, Chen   +8 more
openaire   +2 more sources

Sediment–well interaction during depressurization

Acta Geotechnica, 2016
Depressurization gives rise to complex sediment–well interactions that may cause the failure of wells. The situation is aggravated when high depressurization is imposed on sediments subjected to an initially low effective stress, such as in gas production from hydrate accumulations in marine sediments.
Hosung Shin, J. Carlos Santamarina
openaire   +2 more sources

Venting During Satellite System Depressurization

26th International Communications Satellite Systems Conference (ICSSC), 2008
Multilayer Insulation (MLI) blankets consist of closely spaced aluminum coated shields that are spaced apart to reduce heat transfer between the satellite system and the environment, particularly in vacuum. In space application, satellite systems and sub-systems are wrapped in MLI blankets to isolate them thermally from the environment and achieve ...
Mehmet Öztokatli, Kemal Sari
openaire   +1 more source

Impact of depressurizing rate on the porosity of aerogels

Microporous and Mesoporous Materials, 2012
Abstract The effects of supercritical drying of diluted resorcinol–formaldehyde (RF) gels in CO 2 and in acetone are compared. We show that, for both processes, depressurizing rate of the autoclave after drying has a significant influence on the resultant shrinkage, and hence on resultant bulk density, surface area and pore volumes.
G. Amaral-Labat, A. Szczurek, V. Fierro, E. Masson, A. Pizzi, A. Celzard   +5 more
openaire   +1 more source